#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>

int main()
{
	for (int i = 0; i <= 3; i++)
	{
		for (int j = 1; j <= 2 * i; j++)
		{
			printf(" ");
		}
		printf("****");
		printf("\n");
	}
	return 0;
}